Ustal wspolczynniki w rownaniach reakcji chemicznych: Ca+CO2= Ca + C N2+H2=NH3 Mn+O2=Mn2O5 Al2O3+H2SO4=Al2(SO4)3+H2O Fe2O3+HCL=FeCl3+H2O prosze pomozcie!!!! to na zaliczenie semestru!!! Dziekuje :)
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2Ca+CO2--->2CaO+C
N2+3H2--->2NH3
4Mn+5O2--->2Mn2O5
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Fe2O3+6HCl--->2FeCl3+3H2O